S. Tatiraju et M. Soroush, NONLINEAR STATE ESTIMATION IN A POLYMERIZATION REACTOR, Industrial & engineering chemistry research, 36(7), 1997, pp. 2679-2690
This paper concerns nonlinear state estimation in a continuous polymer
ization reactor where free-radical solution polymerization of methyl m
ethacrylate takes place. Initiator and solvent concentrations and the
leading moments of the molecular weight distribution of the polymer ar
e estimated in three measurement cases. For one of the measurement cas
es, the global convergence of the nonlinear observer is proved. The co
nvergence of the nonlinear observers is shown by numerical simulations
, for different values of observer gains, for different observer initi
al conditions, and in the presence of a measurable disturbance. Furthe
rmore, in each case, the implementation and performance of the nonline
ar observer are compared with those of a deterministic extended Kalman
filter.